Fire extinguisher.



H. M. McCASLiN. HIRE EXHNGUISHER. APPLICATION FILED MAR. 22. mm

Patented. Jan. 1%, 1919.

- 'rr snares arana FIRE-EXTINGUISHER.

Application filed March 22, 1918.

To all whom it may concern:

bottle th Be it known that I, HARRY a citizen of the United Elmira, in the county of Chemung and State of New York, have invented certain new and useful Improvements in F ire-Extinguishers, of which the following is a full and clear specification.

he present invention relates to improve- M. McCAsLIN, States, residing at merits in fire extinguishers especially applicable to automobiles, railroad and marine use. The main obJect of the invention is to produce an extinguisher which will be less liable to slopping over than such extinguishers heretofore have been. The present improvements relate especially to the tip over type of extinguisher in which the acidcontained iIra bottle is commingled with the carbonateof soda so-- lution The first feature of novelty in the present invention consists in the novel form of acid bottle. The bottle is constructed with the usual contracted neck 'at the top. and with a second contraction or neck approximately half way between the top and bottom to form by turning the extinguisher upside a bottle with two distinct chamber-soon nected through the contracted passage way of the centralfneck. The improved bottle is designed to have the acid fill the lower chamber up to the central contraction or neck, leaving the upper chamber entirely free to accommodate any accumulation of moisture fromthe soda solution. The botdo has its mouth normally covered. by a loosely fitting lead stopple operating in the usual way. 'With this construction of acid ore is a very small surface of the acid exposed, so that the acid will be subjected to the minimum amount of disturbance when the extinguisher, as a whole, is shaken up.- The improved form of acid bottle is preferably employed in combination with the tip over type of extinguisher, in which it is preferred to employ anqimproved form of coni cal batlle supportedjfrom the mouth of the tank or container. around the acid bottle and the discharge Ulltl eli'lS through an upwardly v Specification of Letters i'atent. I

understood it will first be described with reference to the accompanying drawings and afterward pointed out more particularly in the annexed claims. I

In said drawings, I

Figure 1 is a vertical'sectional view improved extinguisher;

Fig. 2 is an enlarged vertical sectional view of the improved acid bottle;

Figs. 3 and 4. are transverse sectional views, taken respectively upon the sectional lines 3-3 and H of Fig. 2.

l is the usual fire extinguisher tank or container, formed with an open mouth 2 and the flanged bottom 3, in the usual hand hold 4. V

The open mouth is normally closed by the removable screw-threaded top or cover 5. 10 is an acid bottle cage, formed of an approved skeleton construction, flanged upper ring 11, fitting loosely in the open mouth of the containerandresting upon a plurality of internal lugs, one ot' which is indicated at 12. This bottle cage supports the acid bottle ently be explained. Depending cover 5, withiin the container are of the from the fingers 15,

acid bottle when the extmguisher is invertedin theusual manner.

The acid bottle portion 20, and an upper portion 21, connectcd by a contracted central neck 22, which divides the bottle into two chambers, communicating through the channel of the com tracted neck. 1 open mouth neck 23 at the by the lead stopple 25. The acid bottle rests in the cage 10, in the usual manner.

.30 is'a conical battle plate supported at its contracted upper end within the mouth 2 of the tank or container and flaring outwardly and downwardly into the interior of,

the container around the acid bottle and its which is mounted with which will. pres-,

is formed with a lower,

top of the bottle is normally closed.

supporting cage. A series of perforations.-

31 are formed near the end of the baiile Sl), for a ference. an import'orate on the side adjacent to let hereinafter referred upper contracted part of its, circumportion being left the extinguisher out smaller conical bailie 35 is rigidly secured by rivets 36. This baflle 35'is supported by its larger circumference and contracts and inclinesinwardly toward the acid bottle, it being formed with a central opening which Adjacent to the lower edge of the JJatlie 30' a second and.

. the inner surface of the soda solution up freely surrounds the bottle and its supporting cage.

40 is a metal marker arm supported from the baflie and extending downwardly to a point up to which the soda solution should normally be filled in the container.

At one side of the tank 1, near its upper end, I rovide an outlet elbow or'goose neck 50, which extends upwardly to a point adjacent to the mouth of the extinguisher tank. Secured to the downwardly curved end of this elbow 50 is the usual flexible discharge pipe 51. A strainer 52 extends over the inner opening of the discharge elbow 50, and a curved bafile plate 55 is secured to the inner surface of the container, extending over the greater portion of the strainer 52 and closed entirely below and at the ends, so as to permit entrance of the li uid to the outlet only over the top of the ba e 55. This shell-like baille 55 is securely fastened at its edge to Y the container 1. the container 1 is filled with In operation to the indicator 40, and

the acid bottle 20-21 is 22", in the central contracted neck 22. When it is desired to operate the extinguisher it is inverted to cause the acid to flow out of the bottle into the surrounding soda solution causing pressure which forces the solution out through the goose neck 50 and discharge pipe 51. The 'bailie 30, being imperforate adjacent to the outlet it will be understood that the escaping acid will be c0mpelled to mix with the soda solution before it can reach the outlet, thereby preventing the escape of the acid directly to the outlet pipe.

- When the device is upright it will be observed that since there is a small surface of acid in the bottle exposed in the'contracted central neck 2-2, there will .be minimum disturbance of the acid fromthe shaking of the extinguisher, whether in handling or from the vibration of the apparatus, upon which is may be mounted. Any accumulation of moisture from the soda solution into the acid bottle beneath the loose stopple will be amply taken care of by the upper chamber of the double bottle. Any disturbance of the acid in the double bottle will only cause it to splash upwardly upon thewalls of the upper chamber from which it will drain back down into the lower portion of the bottle, the second or open neck of the bottle so small that there of the acid being is practically no danger bottle. Most splashed out of the double splashing of the soda solutionwill be caught by the peculiar form of baille and returned to the body of the liquid, but if, by chance, some little bit of the solution should s lash up into the space covered by the outlet afile filled to the marker 55, it will be observed that this can not creep up through the outlet goose neck 50, since it would overflow and run back into the main body of the liquid before it could \get high'enough into said' 'goose neck.

I claim:- i

1. A fire extinguisher of the type described, comprising a tank or container having a suitable outlet, an acid bottle receptacle supported in the tank or container, and an acid bottle formed with a contracted neck between its ends dividing the bottle into two communicating chambers, and an open mouthed neck at one end in communication with one of said chambers.

2. In a fire extinguisher, of an open mouth container guishing fluid, a closure the combination for an extin-, for said n1outh, an outlet in the form of a goose neck or elbowextending from the container body upwardly toward the plane of the mouth, a discharge,

e leading from said elbow, a baflle upon inside of the container over theopening in the said discharge elbow, an acid bottle support, a conical bafile supported at its small end'in the mouth of the container and flaring therefrom outwardly and downwardly into the container, and an auxiliary bafile supported upon the main bafile upon its larger circumference and projecting inwardly and downwardly therefrom toward the bottle cage, and an acid bottle mounted" in said cage, as set forth.

4. A fire extinguisher of the type described, comprising a tank or container having a suitable putlet, an acid bottle receptacle supported in the tank or container, an acid bottle formed with a contracted neck between its ends dividing the bottle into two communicating chambers, and an open mouthed neck at one end in communication with one of said chambers, supported at its small and in the mouth of the container and wardly and downwardly into the container,

flaring therefrom out- 120 and an auxiliary baffle supported fromthe a conical baffle main bafile upon its larger circumference and projecting inwardly therefrom toward the bottle cage which it surrounds.

" HARRY 15/1; McCASLIN; 

